Why do valid CSS/XPATH selectors not work in BAS?

[morpheus93]

For example, to access the Recaptcha v2 “Verify” button, the selector that works in Chrome (Devtools) is for XPATH: “//[@id=”recaptcha-verify-button“]” and for CSS: “//[@id=“recaptcha-verify-button”]”.
So “>CSS> #recaptcha-verify-button” or “>XPATH> //*[@id=”recaptcha-verify-button“]” should work in BAS. Unfortunately, they do not.

Is this a bug or have I overlooked something to make the selectors work? Or does anyone have another idea to access the “Verify Buttun”?

Sometimes the selectors in BAS seem to have a very strange life of their own and it's more a matter of luck whether they work or not, it seems.

[dqv15478]

Because this button is inside the frame, try something like this:

CSS> iframe[title^="recaptcha"] >FRAME> >CSS> #recaptcha-verify-button

[morpheus93]

Finally I ended using (it's also working for different languages of Recaptcha challenges) if someone searches for the same:
">CSS>iframe[src^=' https://www.google.com/recaptcha/api2/bframe ']>FRAME> >CSS>#recaptcha-verify-button"